Exhausting mechanism



Aug- 8, 1933. R. w. VAN vALzAH 1,921,399

EXHAUSTING MECHANI SM Filed March 5, 1932 vatentecl ug. 8, 1933 juNrrED .sTAjT s 1,1921399 EXHAUSTING lvnromNIsiIv Robert W. Van `{Talzah, Riverside, Ill., assignor to i-Western EIeetriQCompany, Incorporated, New York, N. Y., a Corporation of New York i 'Appliczq March 5, 1932. serial N 0.'5 98,989

701mm.l (cl. rasa-'56) This inventionrelates to .an exhaustingmechanism, ,and more particulariy to an exhausting mechanism `for furnaces operable in'more than one position. 1

In furnaoes of -theabove type, one form of ex+ hausting mechanism heretofore employed zincluded ia hood suificiently large enough to extend completely over .the top of the furnace at alloperating ;positions.V thereof.l The vlarge hood was found objectionable due to 'its unsightly appearance and its obstruction of 'light and also due to an excessive amount of heat being dissipated into the roorn'in' which the furnace is located. An objectrof the present invention is to provide a more simple, eficient and practical mechanism for exhausting gases from a .furnace operable vin more than one position.

In accordance with one embodiment,.the vinvention contemplates an exhausting mechanism'mr car-type furnaces comprisin'ga stationary stack and a hood fixedlxb mounted .upon and lmovable With a furnace and `completely enveloping the .exhaust vent of the'furnace, the hood being .provided witha'plurality of damper-controlled openings arranged'tobe selectively moved into'zregistry with the stack by movement `of the furnace into one or'another of its Operating positons, and the dampers being controlledby means .actuated -byvthe rnovement of the furnace.

The invention will be more fully `understoo from 'the following description taken in connection with the accompanying drawing,v in which Fig. 1 is 'a fragmentary elevational view of a car-type furnace having an exhausting mechani's'm embodying theV features partly in section, and Fig. 2 is a sectional v'view Vofl the exhausting mechanism taken along the line 2-2 of Fig. `1.

Referr-ing now to *the'drawing wherein like reference numerals designate similar parts in both views, numeral 10 designates a stationary Stack disposed in a suitable position so that damper controlled openings of an exhausting mechanisrn indcated generally at 11 may be moved into registration therewith when a furnace 12 upon which the exhausting mechanism is mounted is moved into one or another of a plurality of Operating positions. The exhausting mechanism 11 consists of an insulated hood 13 having damper Controlled i openings 14 and 15 disposed in the top wall adjainto open or closed positions.

Mounted upon the shafts 18 and 19 at one side of the hoodfflB aredamper actuatingcams 22 and. ,23, respectivel, which are normally urged in clockwise vand counterclockwise directions, crespectively, by Springs 24 and 25, respective1y,. to normally urge the dampers into closed positions. The cam 22 is cut away to providea tapered roller engagingsurface 27 positionedto engage a roller 28 which isrotatably carried by a bracket 29 fixed to the .Stationary Stack 10. Thecam 23is cut away to provide a tapered roller engaging i surface B0 positioned to engagea roller 31 which is also rotatably carried by the bracket 29. Elanged guides ;32 are mounted upon the hood extend long'itudinally thereof and passV upon During the operation of the mechanism, the

furnace' 12 maybe loaded in any ;suitableman- C ner withmaterial to be treated; furthermor e, any suitable means may be employed for -movingthe` furnace ;from one vOperating vposition to another. VAs sh own in Fig. V1 the furnace to-' v.gether with the ;exhausting mechanism is in its farthest position to theA left and while in this position `the `dan'lper 16 is held closed by the spring 24 `andgthe` damper' 17 is held -in its-open .positionV againstthe tension of the spring 25 byl the roller'Sl. fWhile theexhausting mechanism is `injt'his position the opening ;15 .of the ;hood 13 is in .general .alignment withthe Stack li'allowing gases to escape from the `retortchamber 37 'through the exhaust vent 35, the aperture, ;to the right through the hood 13, through the opening 15 and pass upwardly through the Stack 10.

When the furnace 12 with the exhausting mechanism 11 is moved to the right (Fig; 1), the cam 23 is moved in a counterclockwise direction by Athe spring 25 to move the' damper 17 into closed position as the shaft 19, upon which the cam 23 is mounted, moves to the right. During the movement of the furnace and the ex- Vhausting mechanism from one position to another, such as VVfrom the left to the right, the dampers 16 and 17 are in closedpositions; that is, as vsoonl as the exhausting mechanism with the furnace is moved a sufiicient distance to allow the damper 17 to close. While the exhausting mechanism is reaching the end of its travel to the right, the surface 27 of the cam 22 engages the roller 28, and during the remainder of the movement of the exhausting mechanism the cam 22 is rotated in a counterclockwise direction until the damper 16 is moved about the shaft 18 from its horzontal and closed position to a vertical and open position. The opening of the damper 16 conditions the exhausting mechanism so that gases may escape from the furnace through the' exhaust Vent 35 through the aperture 36, through the hood 13 to the left, through the Opening 14 and upwardly through the stack 10, which is in general alignment with the Opening 14 when the exhausting mechanism with the furnace is in its farthest position to the right. The guide 32 aids in assuring the alignment of the stack 10 with the openings le ,and 15 when the exhausting mechanism ll With the furnace 12 is either in the right or left operation positions.

The exhausting mechanism is relatively narrOW as shown in Fig. 2 and need not extend in its length beyond the side Walls of the furnace to cause an obstruction of light. Furthermore, a more efiicient association is made between the furnace and the Stack at each Operating position than is possible with the original unsightly type of exhausting mechanism which extends over the entire area covered by the furnace in its Operating positions.

Althoughthis exhausting mechanism has been described as being applied to a furnace, it should be understood that it may be applied 'to devices of other types for exhausting gases therefrom without departing from the spirit and scope Of the present invention.

What is claimed is:

1. The combination with a furnace movable' into a plurality of Operating positions, of a stationary exhausting stack, a hood disposed upon said furnace for receiving gas passing from said furnace andhaving openings disposed at spaced positions in said hoodfor aifording communication between said Stack' and Said hood at each of the positions of said furnace, and means for closing the openings when out of general alignment with the Stack.

2. The combination with a furnace movable into a plurality of positions, of a hood having spaced openings therein and disposed upon said furnace for receiving gas passing therefrom, a stationary stack, dampers disposed in the openings and'when opened .aifording communication between said Stack and said hood through one of the openings at each of the positions of said furnace, means for opening the damper disposed in general alignmentlwith the stock When the furnace is at rest, and means for holding another damper closed.

3. The combination with a furnace movable into a plurality of Operating positions, of a stationary exhausting Stack, a hood movable with the furnace and having openings positioned to afford Communications between said Stack and said hood when said furnace is moved into any one of the Operating positions, a guide for said Stack, and means for closing the openings in the hood when the openings are positioned out of general alignment with said Stack.

4. The combination with a furnace movable into a plurality of Operating positions, of a stationary exhausting Stack, a hood movable with the furnace and having openings positioned to afford Communications between said Stack and said hood when said furnace is moved into any one of the Operating positions, means for closing the openings'in the hood when the openings are positioned out of general alignment with Said Stack, and means for actuating said closing means when moved into general alignment. with said Stack to move it into Open position.

5. The combination with a furnace movable into a plurality of Operating positions, of aV stationary exhausting Stack, a hood movable with the furnace and having openings positioned to afford communications between said stack and Said hood when said furnace is moved into any one of the Operating positions, means for closing the openings in the hood when the 'openings are positioned out of general alignment withv said stack, and means carried by' said Stack for causing said closing means to be actuated when'moved into general alignment with said Stack to move it into Open position, whereby gases may pass from said furnace, through Said hood, the opening in alignment with said Stack, and through saidstack.

6. The combination with a furnace movable into a plurality of positions, of a stationary ex- Vhaust ports and movable with the furnace to selectively align one of the exhaust ports 'with said Stack for effecting communication between said stack and Said furnace When said furnace is moved into one of the positions, and means for closing said eihaust ports when out of general alignment with said` Stack.

ROBERT `-W. VAN VALZAH. 

